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Finding the Third Proportional to 7,980 and 14,688

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Solution

The third proportional to 7,980 and 14,688 is: 27,034.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980 : 14,688 = 14,688 : x
  2. Step 2: Convert to fraction form
    7,980/14,688 = 14,688/x
  3. Step 3: Cross multiply
    7,980x = 14,688 × 14,688
  4. Step 4: Simplify right side
    7,980x = 215,737,344
  5. Step 5: Solve for x
    x = 215,737,344/7,980
  6. Step 6: Final answer
    x = 27,034.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.84) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.